Stenciling machine



Feb. 22,1927. E. G. ROWLEY sTENcILING-MACHINE Filed June 24, 1924 5 Sheets-Sheet l ffy 2.

E. G. ROWLEY STENCILING MACHINE Feb. 22 1927.

Filed June 24, 1924 3 Sheets-Sheet 2 Feb. 22,1927. 1,618,309

E. G. RowLl-:Y

STENCILING MACHINE Filed June 24. 1924 3 Sheets-Sheet 5 @edgy/wif bf @M Patented Feb. 22, 1927.1

. UNITED/STATES PATENT 'ol-FifeI-l"` EDWARD e. RoWLEY, 0E BELLEVILLE, NEW JERSEY, iA'ssIGNoE To UNEEEWooD TYPEWEITEE COMPANY, -oE NEW YoEx, N. Y., A ooEPoRA'rIoNoE DELAWARE.

STENCILING MACHINE.

This invention relates to duplica-ting machines, in which a perforated drum is eovered with an ink-blanket, saturated With ink applied t-o the interior of the cylinder and overlaid with a stencil, between whichand a pressure-roll the paper to be stenciled is passed.

Among the features of the invention are: The provision of an improved work-sheet support table, havingbrackets arranged to t'old automati 'ally when the table is raised, the table having a telescopic front extension limited by fixed stops and being provided with a side gage arranged to prevent scratching or mari-ing its supporting surface; the provision of a cylinder partially supported upon trundles, one of which is mounted upon an adjustable eccentric stub, a brake beingr arranged to engage the cyl-inder,=in such a manner` as to avoid interference with its assemblage, and operated by a pressure-roll-release handle; the provision of pressure-roll Supporting arms, having unusually broad supports for the anti-frictional bearings ot' the pressure-roll and a spring-actuate'd catch normally maintaining the roll inan operative position; the provision of a telescopic work-sheet receiving trough` having unusually high sides, cut

out to clear the cylinder when folded thereagainst; the provision of a counter actuated b v the cylinder at each full revolution and also an annular scale, movable with the cylinder-handle bracket. to indicate the ydistance from the top of the sheet to the impression line; and the provision of an effective mechanism of extreme simplicity, being made of die-castings and sheet-metal stampings throughout.

ln accordance with onefeature of the invention, the work-sheet support table is hinged to the frame ot' the machine and held, when extended in operative position, by a toggle joint bracket. all parts` ot' which fold "'autonnitically within the. contines ot` .the

frame upon raising the table alongside the ca'lindcr. thusl presenting no impediment. to the placement of a cover. An extension of the table z-'lidably engaged below the main portion and has` lugs which contact with a rod fixed in the outer part of the main table, providing an effective alignment. An angular guide for the work-sheets is adjustably and removably engaged upon the table and provided with a cushioned under surface to prevent marring the smoothly finished surface of the'table when moved thereover.

The drum or cylinder is removable, beingsr at one end releasably held upon a stud,and at the other end supported upon three trundles or rolls, two of which are above the center of the cylinder, the third roll, at the bottom, beingmounted. on an eccentric Stud,

readlly adjustable and provided With means for maintaining its adjusted position.

A brake is arranged to engage the periphery of the cylinder in a lnanner to avoid interference with its removal orits replacement, and is set or released by the movement of the pressure-roll control handle. i

The pressureroll carrying arms are unusually wide and formed with cup-like ends larranged to prevent end movement of the walls are cut away to clear the cylinder when folded against it.

A handle is adjustably clamped to the extending end of the cylinder, and carried by the handle bracket is an annular scale by which the distance from the top orentering edge of a \\'orksheet and the lirst line of impression can be accurately determined.

The handle bracket is also provided with lugs to engage an escapement on the frame which arrests the cylinder at each full revolution in either direction, and a counter is used forascertaining the number of sheets stenciled. Improved means are provided for securing the ink-blanket te the cylinder, whereby it is properly stretched,

the clamping device being vreadily held or removed from the exterior of the cylinder.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a front elevational view of an embodiment ot the invention, parts being broken away to show the construction.

Figure 2 is a partial plan and partial scctional view of the pressure-roll carrying and control mechanism, the section being taken on line 22 of Figure 1.

Figure 3 is a transverse sectional view taken on line 3-3 of Figure 1, the cylinder support-s being shown in dot-and-dash lines, and parts are broken away to disclose struc tural features.

Figure 4 is a fragmentary longitudinal sectional view of the stencil cylinder taken on line 4-4 of Figure 1 and drawn to an enlarged scale.

Figure 5 is a fragmentary transverse sectional view taken through the blanket securing channel and illustrating the manner of its assembly.

Figure 6 is a partial front and partial sectional View of the work support table, the section being taken on line 6--6 of Figule 3 and drawn to an enlarged scale.

Figure 7 is an end elevational view of the machine, looking from the right-hand'end thereof, and indicating a cover as applied thereover iu dot-and-dash lines.

Figure 8 is a fragmentary end view,` showing the adjustable trundle support and its eccentric mounting drawn to an increased scale.

Figure 9 is a perspective view of the cyl inder actuating handle, annular scale, and their mounting relative to the cylinder.

In the embodiment shown, the machine will be seen to comprise a support frame consisting of front and rear base bars 15, rigidly connected with upright sides 1G and 17, respectively at the right and left hand side of the machine, these members being supported on feet 18 resting on any level surface. The raised portions of the frame side 1T converge to a central boss lf), bored to receive a fixed plug 20 on which is revolubly mounted acylinder, generally designated by the numeral 2l, in such manner as' to be readily removed. 'l'lie riglit-hand side `trame 16 has (livel-ging U-sliaped up per elements on which are mounted revoluble trundles or rolls 22, engaging the cylinder 2l on opposite sides above its center. A third trundle or roll 22", bearing on the cylinder at the bottom, is rotatably mounted on a screw 23, carried eccentrically by a stud 24 adjustable in the frame side 16, in a plane directly below the center of the cylinder, the Banged projecting end of the stud being held in adjustment by a clamp screw 25, as best shown in Figure 8.

The cylinder' is open atine end carried in the trundles 'and fixed in the other end is a spoked head 26, having a hub 27, containing an annulargroove in which is received the end ot a spring actuated detent 28, mounted on 4a pivot 29 extending between lugs raised from the boss 19, so that when the outer end of the detcnt is depressed, the hub 27 will be free to move off the stud, permitting the cylinder to be drawn outwardly from between the trundles, clear of the machine.

At the outer, o posite `end of the cylinder 1s a rigid, anni ar head 30, increased in diameter to present a ring 31, on which the trundles 22 and 22 bear, and near the outer edge of the head is an annular groove 32, a similar groove 33 being formed in its inner surface.

A bracket 34, having an extending, handle 35, is held to the end of the cylinder head by radially extending lugs 36 and 37 intcgral-with the ends of the bracket, the inner portions of the lugs engaging in the groove 32, and a single central clip 38, secured to the bracket by a screw 39, engages the inner groove 33.

A gib plate 40 is dis osed `between the main portion of the braciiet 34 and the end surface of the cylinder, the plate having a liner 40n of fiber or like material to contact with the cylinder end when forced thereagainst by clamp screws 41, having knurled heads for convenience in hand operating, the points of the screws impmging on the plate 40, clamping the bracket at any point along its circumference.

. A gravity actuated stop or pawl 42, havlng arms 43 and 44. is pivotcd on a shouldered screw 45, Set in the frame side, 16, the stop being normally at restagainst a fixed pin 46, and is provided with a handle 47. Vv'hen the cylinder handle 35 is turned to bring the cam face of the lug 3G into contact with the arm 44, the stop will tilt upon its pivot, allowing the lug to pass, and then return by gravity to its normal position to intercept the lug 37, preventing further ro tation ol the cylinder in clokwse direct-ion,

until the stop has been released by its lian- (lle 47. Then the cylinder is rotated in an operative. contrary direction` the lug ill" passes freely over the arm 42% and. striking the arm 44, tilts the stop. raising the arm ft2- to engage the inner face otl the lug 36 stopping the cylinder; however, ita slight momentary cessation of motion of the cylinder is made, such as is caused by recoil of the lug against. the arm, the stop will re turn to its normal position, permitting further rotation o the handle and cylinder.

Secured to the rear surfaces of the lugs 36 and 37 are angular sheet metal brackets 48 and 49, carl-yin on their under surfaces the ends of a ban 50, fitting freely within a, groove 51 in the ring 31, dlosely adjacent the track of the trundles. This band is provided with graduations, reading from the stopping point of the cylinder, as determined by the location of the handle 35. The

position of the handle and lugs, therefore, determine the position of the cylinder, when the work-sheet is introduced, and the scaleh shows the depth of margin at the top of the work-sheet.

The main body of the cylinder consist-s of `a sheet-metal plate 52, attached to the inner reduced portions of the heads 26 and 30 respectively, by screws 53, and is provided with a plurality of perforations 54 throughout its entire area. The reduced portions of the heads contain openings arranged in alignment and in which is secured a sheetmetal channel 55, over the side walls 56 of which, the ends 57 of the perforated plate 52 are secured, these ends reaching to the bottom of the channel.

Fixed in the ends of the channel, to the inreaching annular rim members 58 and 59 of the heads 26 and 30 respectively, are plates 60, secured in opposed relation by screws 61 and having, at their centers, openings 62 above which the metal is bulged to present inreaehing lugs 63 to engage a channel cover plate 64.

The cover plate 64 is curved transversely in conformity with the radius of the cylinder and arranged to rest at itslends upon the upper edges of the plates 60, its central portion being supported by posts 65 riveted into the channel bottom.

The edges of the cover 64 are downianged to fit Within the sides of the channels and one end is sheared and formed to present a clip 66, having an outturned lower edge to engage below one of the lugs 63. Near the other end of the cover, on its inner side, are secured inreaching lugs 67, spaced A and perforated to act as guides for a sliding bolt 68, carrying a transverse pin 69 against which one end of an encircling compression spring 70 abuts, the other end of the spring being seated against the mating lug 67, the

laction of the spring being to press the beveled end of the holt into the opening below t! lug 63 to he held by it; the opposite end o. Ahe holt 68 is bent upwardly, forming a linger-piece 7l, projecting into an opening 72 in the cover, this opening being of ample size to permit the entrance of a finger in retracting the bolt.

Also formed on the plates 60, at their ends, are inreaching projections 74 relatively short and narrow to engage over the ends of rods.75 to which are attached the ends of an ink-blanket 76. It will be understood `wheel, preventing its overthrow,

around the perforated cylinder to the other side,.and` that it is capable of being stretched by swinging the rods under the projections 74, which hold them in place belowY the.

cover.

A bracket 80 extends integrally outward from the frame side 17 to support a countlng register 81, having a twirling knob 82 by which the register may be set, and a starwheel 83, extending into the path of a pin 84 fixed in the end of the cylinder.v A spr1ng 85 acts as a brake or drag to the starthe spring fixed to an inreachinv lug 86, and a bein lgar lug 87 extendsfin lfrom the frame simi . side 16.

Carried by the lugs 86 and 87 are the narrow rearward extensions 88 of a paper-deector 89, extending upwardly andto the front of the cylinder, the deflectorbeing mainly supported on ledges 90, 'extending in from the frame sides.

Below the deflector, and extending furlther toward the front, is a fixed paperapron 91, supported on lugs 92, extending inwardly from the frame side and to which it is firmly secured.

Normally level with the paper-apron is a Work-sheet support table 95, generally rectangular but reduced at its rear corners and formed with downwardly extending ears 96 through which pass pivot screws 97 to enter bosses on the inner surface of the frame sides; the lateral edges of the table are bent downwardly at a right angle to form flanges 98 and rigidly connected to their inner sides are rolled angles 99 spaced from the undersur'faee of the table to guide and support a telescopic extension plate 100. This extension plate is provided with a downturned flange 101 at its front edge and near its rear edge is Vsheared and bent to produce stops 102 to make contact with a rod 103, fixed in the flanges and angles 98 and 99 near the front of the main table 95, thus providing a collapsible table of unusually large arca.

Extending in from theframe sides 16 and 17 are bosses 105 and 106 drilledin register to receive a rod 107 on which is mounted a link 108 adjacent the boss 106, the free end of the link being offset and pivoted at 109 to a strut 110, in turn pivoted on a pin lll, fixed in one 0f the table flanges 98, to which it is held by a eotter 112.

The free end of the strut 110 is provided with a foot 113 bent at an angle to make a flat contact with the front frame-base bar 15 when the table is extended horizontally` 'lo prevent the toggle, constituted by the `linl and strut, from moving inward or to` ward the cylinder upon turning the table down, a projection 114 is formed on the end of the link 108, `on its inner side, the same making contact with the under surface of the adjacent angle 99, and maintaining the pivot 109 just slightly outward or in advance of a straight line between the pivotal axes of the rod 107 and pin 111.

A paper-gage 115, having a raised flange 116, is secured to adjusting strips 117 having angle elements 118 riveted to the flange 116 and clamped, when in adjust-ment on the table, by thumb-nuts 119 engaging threaded posts 120 fixed in the table, this gage and its attached strips being provided with cushioning material 121 over their entire contacting surfaces to prevent abrading and damaging the finish of the table.

A receiving trough or table 124 for the stenciled work-sheets is provided at the rear of the machine, the trough being lower than the support-table, and inclined downwardly at its rear outer end. This trough is composed of a flat sheet-metal plate j125 having raised right angular side walls 126 iivoted upon screws 127 set in the frame sides 16 and 17, and interposed between the heads of the screws 127 and the inner surface of the trough side walls 126, are spring washers 128 frictionally' maintaining the trough when raised. In order to fold the trough compactly when not in use, the walls 126 are cut out, presenting recesses 129 curved to make contact with the cylinder 21, as best seen in Figure 7.

Strips 130 of right angular cross-section are fixed to the trough sides/126, one member of each angular strip extending inwardly spaced below the plate 125 providing runways 131 for guiding and supporting a plate 132 slidable therein to form an extension by which the length capacity of the trough is materially increased. The outer end of the plate 132 is turned up at a right angle, presenting a barrier 133, preferably higher than the side walls of the trough, to prevent work-sheets from escaping.

A pressure-roll 135, of soft elastic nature, is provided with a shaft 136 having shouldered ends 137 mounted in anti-frietional bearings 138, which rest in open topped pockets 139 formed at the ends of arms 140 pivoted on the rod 107. 'lhe arms 140 are of T-shaped cross-section having long hubs Hl. providing eflieient bearings on the rod 107, to which they are' held in place h v co1'- ters 142 (see Figure 2), and the arms are of such length as to locate the pressure-roll lls direct ly below the. axis ot' the cylinder 2l.

Carried between the arms llt), parallel and spaced adjacent. from the pressure-roll 135, is a rod 143 engaging a link l-l-l at its conter, connected by a pivot 145 with a clevis 146 lirmly secured to a rock-shaft 147 mounted in brackets 148 integral with the frame sides 16 and 17. The shaft 147 is 65 relatively still' and unyieldin as it conveys pressure to the ressure-ro l 135 by the equalizing toggle evices described.

The end of the shaft 147 is. provided with va fixed collar 149 in Contact with the inner side of one of the brackets 148 at the frame side 16, the extendin end of the shaft bein actuated b a leverike handle 150 exten ing towar i the front of the machine, adjacent the frame side 16, and provided with a laterally-extending fineerad 151.

At the front of the 151, is a projection 152 having a straight upper edge and a curved cam-like under surface to engage a detent 153, formed on a catch or release lever 154, pivoted on a.

shouldered screw 155 set in the outer side of the frame 16, the catch being provided with an outturned finger-pad 156.

The catch 154 has a prt'ection 157 at itsrear, opposite the pivot, rilled to receive one end of a coiled tension spring 158, the opposite end of the spring en aging with a similar projection 159 on the ower edge of than le, below the pad.

the handle 150. Thus, the spring serves the W purpose of maintaining the catch in position to engage the projection 152 of the pressurehandle 150 with the; detent 153 of the catch 154, and also to hold these elements in engagement until manually released. The spring furthermore operates to raise the handle 150 up, as can be seen in Figure 7, maintaining the pressure-roll 135 out of contact with the cylinder until the handle is again depressed. t

Means for ad'ustably and `positively enf gaging the han le 150 to the shaft 147, so as to vary the pressure on the roll 135, are indicated by the dial 160, held by a springwasher 161 and screw 162 to the end of the shaft.

A cylinder-brake pad 165 extends into a recess 166 in the frame side 16, the pad being part ofa bell-crank lever-arm 167, pivoted on a screw 168 set in the inner side of the frame, the other arm 169 of the lever being bent angularly outward, below the frame, forming an extension 17() disposed in the path of a cam 171, which is part of the handle 150.

A coiled tension spring 172 draws the lever-arm extension 17() against the cam, and it will be obvious that when the handle l5() is raised, the brake-pad 165 will be forced against the. cylinder by the lspring 172, creating enough friction lo prevent rolor tation of the cylinder, the. brake being with-` metal, vshaped by press-forming operations,v

stencil cylinder comprising a pair of heads and a erforated body therebetween, one of the lieads having a spider-carried hub engageable on' the stud, the other head having a portion of increased diameter to rotate between the trundles, and means for adJusting one of said trundles towards or from the cylinder.

2. In a lduplica-ting maclnne, the conibination with a frame having a raised single support on one side and a U-shaped support on the other side, a pivot fixed in the single support, a trundle carried at each of the extremities of the U-shapedsupport, and a stencil cylinder removably journaled on said pivot and guided by the trundles, of a stud rotatable in the lower part of the U-shaped support, a trundle mounted eccentrically on said stud to move relatively to the axis of the cylinder, and means .for retaining the stud in an adjusted position.

3. In a duplicating machine, the combination with a frame having a raised single support on one side and a U-shaped support on the other side, a pivot fixed in the single support, a stencil cylinder' journaled on said pivot, and a trundle carried on the extremity of each raised member of the U shaped support above the axis of the cylinder andon opposite sides thereof, of a third trundle below the axis of the cylinder, and controllable means for adjusting the third trundle towards or from the cylinder.

4. In a duplicating machine, the coinbina tion with a frame and a stencil cylinder revoluble therein, of an open head at one end y-of the cylinder, the outer portion of said head being increased in diameter and'liaving opposed interior and` exterior annular grooves, a handle-carrying bracket having lugs engaging the exterior groove, a clip .reinovably secured to the bracket engaging the interior groove,a plate shaped in conformity with the bracket and held loosely thereto by the clip, and thumb-screws threaded through the bracket to hear against the plate forcing it against said head whereby the bracket may be adjustably clamped to the cylinder in any position relative to its circumference. 1

5. In 1: duplicating machine, the combination with a frame and a. stencil cylinder revoluble therein, of an open head at one end of the cylinder, the outer, portion of said head being increased in diameter and having opposed interior and exterior annular grooves, and a relatively wide and'sliallow third groove adjacent the exterior groove, a handle-carrying bracket having lugs at its ends engaging the first exterior groove, a clip 'screw-fastened to the bracket engaging the inner groove, a graduated metal tape disposed in said third groove, rigid connections between tlie ends of said tape and said lugs whereby the tape is moved in unison with the bracket around the cylinder, a gib plate loosely carried' by the bracket, and thumb-screws threaded through the bracket to impinge against the gib plate, permitting relative adjustment of the bracket and cylinder.

6. In a duplicating machine, the combination with a frame having raised sides and a hollow stencil cylinder i'evoluble therein,

o fa handle-carrying bracket, means forl Arigidly clamping the bracket to said cylinder in any circumferential position thereto, lugs on the bracket extending radially outward. and a stop pivoted on said frame, said stop having angularly-extending arms, one ot the arms reaching horizontally towards the front normally out of the path of the lugs, the second arm being rocked by contact with t-lie first advancing lug to bring the first stop-arm into intercepting relation with the second lug, arresting rotation of the cylinder when turned in an anti-clockwise direction.

7. In a duplicating machine, the combination with a frame having raised sides and a hollow stencil cylinder revoluble therein, of a handle-carrying bracket, means for rigidly clamping the bracket to said cylinder in any circumferential position thereto, lugs on the bracket ,extending radially outward, said lugs being respectively right and left hand when facing the open end of the cylinder and the bracket is at its lowerinost vso position, a stop pivoted at a fixed point on said frame, said stop having two angular arms respectively front and rear, a pin on which the front arm normallyrests, the riglit-hand lug passing freely over the front arm and oscillating the stop by contact with the rear arm to bring the front arm into position to intercept the left-hand lug, causing cessation of cylinder rotation in anticlockwise direction imtil the front arm has dropped to normal position, and ahandle fixed in said stop for manual control.

8. In a duplicating machine, the combination with a frame having raised sides and a holow stencil cylinder revoluble therein, of a handle-carrying bracket, means for rigidly any circumferential position thereto, lugs on the bracket extendin radially outward said lugs being respective y right and left hand when facing the open end of the cylinder and the bracket is at its lowermost position, a stop pivoted at a fixed point on said frame, said stop having two angular arms respectively front and rear, a pin on which the front arm normally rests, the right-hand lug passing freely over the front arm and oscillating the stop by contact with the rear arm to bring the front arm into position to interceit the left-hand lug, causing cessation o cylinder rotation in anti-clockwise direction until the front arm has dropped to normal osition, said left-hand lug passing over botii arms when the cylinder 1s rotated in clockwise direction, such movement being arrested upon contact by the right-hand lug with the rear arm, and means for manually oscillating said stop to permit turning the cylinder 1n either direction.

9. In a duplicating machine, the comblnation with a frame having raised sides and a hollow stencil cylinder revoluble therein, of a handle-carrying bracket, means for rigidly clamping the bracket to said cylinder 1n any circumferential position thereto, lugs on the bracket extending radial] outward, and an escapement pivoted on t e frame, said escapement engaging Vthe lugs and compelling a momentary cessation of cylinder rotation at one point in its revolutions when turned `in an operative direction.

' 10. In a duplicating machine, the combination with a frame having raised sides and a hollow stencil cylinder revoluble therein, ofa handle-carrying bracket, means for rigidly clamping the bracket to said cylinder in any clrcumferential position thereto, lugs on the bracket extending radially outward, and an escapement comprising a double-ended stop-pawl ivoted on the frame to be moved by one o said lugs to intercept the other lug, said stop-pawl moving by gravity to an inoperative position upon cessation of pressure of the last-named lug.

11. In a duplicating machine, the combination with a frame having raised sides and a hollow stencil cylinder revoluble therein, of a handle-carrin bracket, means for rigidly clamping t e racket to said cylinder in any circumferential position thereto, lugs on the bracket extending radially outward, an escapeiuent comprising a double-ended stop-pavvl pivoted on the frame to be moved by one of said lugs to intercept the other lug, said stoppawl moving by gravity to an inoperative position u n cessation of pressure of the last-named ug, a stop-pin against which the stop-pawl normally rests, and a handle for manually actuating the stop- 12. In a duplicating machine, .the combination with a frame having raised sides and a hollow stencil cylinder revoluble therein,

of a handIe-carryin rigidly clamping the gracket to said cylinder in any circumferential position thereto, lugs on the bracket extending radially outward, and an escapement comprising a doubleended stoppawl pivoted on the frame to be moved by one of said lugs to intercept the other lug, the distance between the end extremities of the stop-pawl being equivalent to the distance between the inner surfaces of said lugs, said stop-pawl swinging to an in-- operative (position by gravity u on stopping the cylln er, permitting its urther rotation.

13. In a duplicating machine, the comb1- nation with a frame, a stencil cylinder revoluble therein rand a pressure-roll having a shaft provided with vanti-friction bearings at its ends, of a rod fixed in the frame sides, a pair of lever-arms having long bearinfrs mounted on the rod, pockets in the free en s of said arms in which the anti-friction bearings are closely confined, the pockets having lateral recesses to permit the shaft to enter below the level of thearms, a pressure-rod fixed to extend between the arms, an equalizing to gle device enga ing the pressurerod attie center of its ength", and means for actuating said to gle device to raise or lower the pressure-ro l relatively to the cylinder.

-14. In a duplicating machine, the combination with a frame, a stencil cylinder revoluble therein and a pressurefroll having a shaft provided with anti-friction bearings at its ends, of a rod fixed in the frame sides, a pair of lever-arms having long bearin mounted on the rod, open-topped deep poc ets in the ends of said arms in which said anti-friction bearings are seated, the pockets having side openings permittin entrance of the shaft from the toptoget ier with its bearings, a Lpressure-equalizing rod fixed in said arms a jacent the shaft, and means of applying. pressure thereto by which the pressure-roll is held with uniform tension against the cylinder or Withdrawn therefrom.

. 15. In a duplicating machine, the combination with a frame, a stencil cylinder revoluble therein and a pressure-roll having a shaft provided with bearin s at its ends, of a fulcrum rod fixed in til lever-arms mounted to swing on the rod and having pockets at their free ends in which said bearings are seated, a pressure rod extendin between the lever-arms, a rock-shaft journa ed in the frame sides, a clevis fixed centrally on the shaft, a link connectinnr the pressure-rod and clevis, said link an clevis constituting a toggle, a handle operatively engaged on the shaft to raise and lower the pressure-roll, a catch pivoted on the frame to engage the handle when depressed, and means co-operative between Y bracket, means for e frame sides,

CII

lll

said handle and catch to cause such engagement.

16. In a duplicating machine, the combination with a frame, a stencil cylinder revoluble thelein and a pressure-roll having a shaft provided with bearings at its ends, of a fulcrum rod fixed in the frame sides, lever-arms mounted to swing on the rod and having pockets at their free ends in which said bearings are seated, a pressure-rod extending between the'lever-arn'ls, a rock-shaft journaled in the frame sides, a clevis fixed centrally on the shaft, a link connecting the pressure-rod and clevis, said link and clevis constituting a toggle, a handle operatively engaged on the shaft to raise and lower the pressure-roll, a catch pivoted on the frame to engage the handle when depressed, and a single lensional spring connecting the handle and catch whereby they are mutually held in either engaging position or in engagement, said spring also acting to maintain the handle in a noimally raised position.

17. In a duplicating machine, the combination with a frame, a stencil cylinder revoluble therein and a pressure-roll having a shattprovided with bearings at its ends, of a :tulcrum rod fixed in the frame sides, lever-arms mounted to swing on the rod and having pockets at their free ends in which said bearings are seated, a pressure-rod extending between the lever-arms, a rock-shaft journaled in the frame sides, a clevis fixed centrally on the shaft, a link connecting the pressure-rod and clevis, said link and clevis constituting a toggle,`aI handle operatively engaged on the shaft to raise and lower the pressure-roll, a catch pivoted on the frame to engage the handle when depressed, a spring connecting said handle and catch, said spring normally holding the handle in a raised position and also holding the handle and catch in engagement when the handle is depressed, a brake for the cylinder, and means on said handle for controlling the brake.

18. In a duplicating machine, the combination with a frame, astencil cylinder revoluble therein and a pressure-roll mounted to swing against the cylinder at the bottom thereof, of a rock-shaft, a. toggle actuated thereby to raise and lower the pressureroll, a handle operatively engaged on said shaft, a profile cam on the rear otl the handle, a belhcrank lever pivoted on the frame, one of the arms ot' the lever extending into the path of the cani, a brakeepad on the other lever-arm, and a spring to draw the brake-pad against the cylinder when the handle is raised.

19. In a duplicating machine, the combination with a frame, a stencil cylinder revoluble therein and a pressure-roll mounted to swing against the cylinder at the bottoni thereof, ot' a rockshaft, a toggle actuated thereby to raise and lower the pressure-roll, a handle to rock the shaft, said handle heing normally .spring held in a raised position, means to lock the handle when lowered, a cam on said handle, a bell-crank lever pivoted on the frame, the lower arm of the lever being bent to engage the cam, a spring to hold the arm against the cam, and a brake-pad carried by the other arm of the lever to contact with the cylinder when the handle is raised, said pad being released from the cylinder when the handle is lowered.

20. In a duplicating machine, the combination with a frame having raised `sides, a stencil cylinder revoluhle therein and having an annular track-Way at its open end, trundles carried by the frame to bear on the track-way and a pressure-roll mounted to swing towards and from the cylinder, of a brake urged to engage said track-way, a handle to press the roll against the cylinder and coincidentally release the brake, said handle also being operative to release the roll and set the brake, a catch for the handle when depressed, vand resilient means for raising said handle, said means also causing engagement of the catch.

EDWARD G. ROWLEY. 

